By means of grouting in advance at the working face and selecting reasoble pouting technology in the tunneling of mix-shaft which gushes out great quantity of water,not only can it improve working condition but also can quicken the pace of the project.

• 文中介绍了在涌水较大的竖井井筒掘砌施工中，采用工作面预注浆，合理选 择注浆工艺，既可改善施工条件，又能加快工程进度。